factor 4a^3+20a ^2b

Question

factor  4a^3+20a ^2b

psymon · Answer

The b isnt an exponent, right, only the 2?

anonymous · Answer

yes

psymon · Answer

Well, your looking for the largest possible number that can be divided out of each term and then the largest power of a that can be divided out.

anonymous · Answer

i already did it, but i cant come up with an answer 
:(

psymon · Answer

So do you know what number and variable to divide out?

anonymous · Answer

i took the a puit so i got 
a (4a^2 + 20ab) then i tried to factor but neither 2-2 or 4-1 for the a square math with 10-2 or 5-4  for the 20ab

psymon · Answer

Well, you dont need to factor it in that way, all you need to do is find the largest number that goes into both 4 and 20. Not only that, but you can pull out another a. You took out a first power of a, but you can take out two powers since both terms still have an a remaining.

psymon · Answer

a^2(4a+20b)

Now its justtaking out the largest possible number.

anonymous · Answer

ok igot it, thank you somuch :D

psymon · Answer

Yep, np :3

anonymous · Answer

Synthetic division

anonymous · Answer

@juanramon.33 :Got it ???

anonymous · Answer

are you still need help?

anonymous · Answer

yeah i got it thank you very much tho :D